The really first successful vinyl LP in history? It was released by Columbia Records, its code was ML4001, its title was the “Mendelssohn Violin Concerto in E Minor with soloist Nathan Milstein and Bruno Walter conducting the Philharmonic Symphony Orchestra of New York”. The very first microgroove plastic record was invented by a Columbia engineer called Peter Carl Goldmark that in 1939 started a study to evolve the 78-rpm record forward to 33 in order to extend the playback time to more than 20 minutes per side. Goldmark wanted something that last longer but it wasn’t that easy. The Great Depression and World War II slowed everything down, including Goldmark’s team and its microgroove innovations. But once the war ended, the record business boomed and researches marched on. The LP invention was finally presented at the New York Waldorf-Astoria Hotel in 1948 introducing the commercially available long-playing record era. Whit millions of pieces sold , and music finally entering into every home, the LP caused a society transformation never happened before. The music business also changed due to this invention: LPS were into stores for almost 40 years untill CDS took over. And everything changed again.